碳纤维圆形双层正交索网的非线性分析

作者:吴扬,吴晓 刊名:工程与试验 上传者:王风

【摘要】研究了碳纤维圆形双层正交索网在均布荷载作用下的静力特性,建立了其在均布荷载作用下的非线性控制方程,首次求得了碳纤维圆形双层正交索网在均布荷载作用下,其上下索网层间接触力的计算公式.在把碳纤维圆形双层正交索网与钢丝圆形双交索网层正交索网比较的基础上,讨论分析了温度、索网垂度等因素对碳纤维圆形双层正交索网静变形的影响.随着温度的增加,圆形双层正交索网的拉力将变小,圆形双层正交索网上下索网层间接触力将变大;当温度一定时,随着索网垂度的增加,圆形双层正交索网的上层索网拉力及层间接触力将增大,圆形双层正交索网的下层索网拉力将变小.

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N04.2008 工程与试验 December 2008 碳纤维圆形双层正交索网的非线性分析 吴 扬1,吴 晓1 (湖南文理学院土木建筑工程学院,湖南常德415000) 摘要:研究了碳纤维圆形双层正交索网在均布荷载作用下的静力特性,建立了其在均布荷载作用下的非线性控 制方程,首次求得了碳纤维圆形双层正交索网在均布荷载作用下,其上下索网层间接触力的计算公式。在把碳纤 维圆形双层正交索网与钢丝圆形双交索网层正交索网比较的基础上,讨论分析了温度、索网垂度等因素对碳纤维 圆形双层正交索网静变形的影响。随着温度的增加,圆形双层正交索网的拉力将变小,圆形双层正交索网上下索 网层间接触力将变大;当温度一定时,随着索网垂度的增加,圆形双层正交索网的上层索网拉力及层间接触力将增 大,圆形双层正交索网的下层索网拉力将变小。 关键词:碳纤维;正交索网;非线性 中图分类号:TU311.1 文献标识码:A Nonlinear Analysis of Circular Two-layer Orthogonal Cable Net Using Carbon Fiber Cables Wu yang.Wu xiao (Civil Engineering Department,Hunan University of Arts.and Science,Hunan Changde 415000) Abstract:By establishing nonlinear control vibration equation,the static force feature of circular two-layer orthogonal cable net under uniform load is studied.and calculation expressions of touching forces between layers of upper and lower cable net under uniform load are firstly given in this paper.On the base of comparing circular two-layer orthogonal cable net using carbon fiber cables with using steel cables,this paper discusses and analyzes the impact of temperature,sag of cable net and other factors to the static force feature of circular two-layer cable net using carbon fiber cables.The temperature increment will make the tension of circular two-layer cable net de— crease and make the touching forces between upper and lower cable net of circular two-layer cable net increase.When the temperature iS certain,with the sag of cable net increment,the tension of upper cable net and touching forces

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